Exercise :: Arithmetic Reasoning - Section 1
- Arithmetic Reasoning - Section 1
- Arithmetic Reasoning - Section 2
| 11. | A is 3 years older to B and 3 years younger to C, while B and D are twins. How many years older is C to D? |
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Answer: Option C Explanation: Since B and D are twins, so B = D. Now, A = B + 3 and A = C - 3. Thus, B + 3 = C - 3 |
D + 3 = C-3 | 12. | The 30 members of a club decided to play a badminton singles tournament. Every time a member loses a game he is out of the tournament. There are no ties. What is the minimum number of matches that must be played to determine the winner ? |
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Answer: Option B Explanation: Clearly, every member except one (i.e. the winner) must lose one game to decide the winner. Thus, minimum number of matches to be played = 30 - 1 = 29. |
| 13. | In a garden, there are 10 rows and 12 columns of mango trees. The distance between the two trees is 2 metres and a distance of one metre is left from all sides of the boundary of the garden. The length of the garden is |
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Answer: Option C Explanation: Each row contains 12 plants. There are 11 gapes between the two corner trees (11 x 2) metres and 1 metre on each side is left. Therefore Length = (22 + 2) m = 24 m. |
| 14. | 12 year old Manick is three times as old as his brother Rahul. How old will Manick be when he is twice as old as Rahul ? |
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Answer: Option B Explanation: Manick's present age = 12 years, Rahul's present age = 4 years. Let Manick be twice as old as Rahul after x years from now. Then, 12 + x = 2 (4 + x) Hence, Manick's required age = 12 + x = 16 years. |
| 15. | A tailor had a number of shirt pieces to cut from a roll of fabric. He cut each roll of equal length into 10 pieces. He cut at the rate of 45 cuts a minute. How many rolls would be cut in 24 minutes ? |
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Answer: Option D Explanation: Number of cuts made to cut a roll into 10 pieces = 9. Therefore Required number of rolls = (45 x 24)/9 = 120. |